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    Nanoengineering of Core-Shell Magnetic Mesoporous Microspheres with Tunable Surface Roughness

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    Date
    2017
    Author
    Yue, Qin
    Zhang, Yu
    Jiang, Yongjian
    L, Jialuo
    Zhang, Hongwei
    Yu, Chengzhong
    Elzatahry, Ahmed A.
    Alghamdi, Abdulaziz
    Deng, Yonghui
    Zhao, Dongyuan
    ...show more authors ...show less authors
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    Abstract
    Functional core-shell mesoporous microspheres with integrated functions, controlled structure, and surface properties and morphologies have received increasing attention due to their excellent physicochemical properties. Herein, core-shell magnetic mesoporous materials with cauliflower-like morphology and tunable surface roughness have been synthesized through a kinetics-controlled interface co-assembly and deposition of mesostructured nanocomposites on Fe3O4@RF microspheres (RF refers to resorcinol formaldehyde resin). The obtained microspheres, synthesized via this interface nanoengineering method, possess well-defined sandwich structure with a tunable rough morphology, uniform size (560-1000 nm), perpendicularly aligned mesopores (?5.7 nm) in the outer shell, RF-protected magnetic responsive core, high surface area up to 382 m2/g, and large pore volume of 0.66 cm3/g. As a result of the unique surface features and magnetic properties, these microspheres exhibit excellent performance in stabilizing and oxygen-free manipulating aqueous solutions in petroleum ether by a magnetic field. They also exhibit superior cell uptake properties compared with traditional smooth core-shell magnetic mesoporous silica microspheres, opening up the possible applications in fast drug delivery in cancer therapy.
    DOI/handle
    http://dx.doi.org/10.1021/jacs.7b01464
    http://hdl.handle.net/10576/16465
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